Perfect wish fulfillment
The other aspect of why watching the video is so gratifying is that it’s the ideal wish fulfillment. How many of us have witnessed others get away with obnoxious or inconsiderate behavior? how many of us have kept quiet when we wanted to retaliate?
The proxy who didn’t appear to care and sat on the youngster’s legs was acting as a representative for us all. He wasn’t doing it just for himself — he was doing it for every one of us when he got that little brat back.